> I can't seem to find any way to send a character string of the > appropriate arbitrary widget name to the callback function so that I can > put the widget value into the parameter list. I've tried setting an > attribute of the widget with its associated parameter name when I create > the callback, but the attribute seems to disappear when the callback is > called. > > How about passing the parameter name as the "user data" to the callback. Like:
gSignalConnect(widget, "value-changed", fun, parameter_name) Then that string is passed as the last parameter to 'fun'. Then you can update your global data structure. Note: the code above is for RGtk2, but it looks like you're using the old RGtk for GTK+ 1.2. Why not upgrade? http://www.ggobi.org/rgtk2 You could also use gObjectSetData() like widget$setData("param-name", param_name) Then widget$getData("param-name") to get it back out. > I can get around all this whole problem by simply looping through all of > the widgets at once by name: > > for (i in widget.names) params[[i]] <- get(i)$GetValue() > > but this approach is inefficient when only one parameter is changed at a > time. > > Are you sure this is that inefficient? How many widgets do you have per GUI? This would be the simplest way to do it. Michael > _______________________________________________ > R-SIG-GUI mailing list > R-SIG-GUI@stat.math.ethz.ch > https://stat.ethz.ch/mailman/listinfo/r-sig-gui > _______________________________________________ R-SIG-GUI mailing list R-SIG-GUI@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-gui
